Pipe bending apparatus



Feb. 28, 1933.

G. LIDSEEN 1,899,281

PIPE PENDING APPARATUS Filed April 2, 1931 2 Sheets-Sheet l m mf lli /17I I i5 H /Z Z f7 t 1 26 Zg A`-:* L Z! ZZ Z3) T "I l/ 1/ ,Zi 9 fw/f 527/1, f f 7 Z6 4 Feb: 28, 1933.

` G. LIDSEEN PIPE BENDING APPARATUS Filed April 2, 1931 2 Sheets-Sheet 233 Z7 l Z9 nvEIfz/EP awe fz'deerv.

'Pateated `relaV as, 1933 GUs'rAvi: LIDSEEN, or oHIoAGoiILLINoIs fApplication flied April 2,

[Thejpresent invention pertains to an improved form of pipe and tubebendingmachine of a type constructed to permit thesame l tobe mounted orclamped in position upon a supportto provide a stationary type ofbending apparatusjlThe improved device is of simplified constructionadapted for* bending pipes or tubing of different sizes ordiameters n reither separately or simultaneously by means i@ of a lever operatedApawl and having a: pipesupporting cradle removably engaged thereon.` na Itis an object ofi-this invention to provide a simpliied type.ofl'pipe and 'tube bending apparatus wherein a multipleI 'type pipebending block or sheave is provided with a" i removable cradle or pipesupporting hanger constructed! to `facilitatev mountingand y'reo movalofpipes or tubes of different sizes.-

Y It is also an obj ect :of this 'invention to proyvide an improved typeof pipe and tube bending apparatus; wherein a lever yoperated multipletype block or .sheave is adapted to be operated with respect to astationary lmultiple type pipe support to act on one orimore pipes ortubes of different sizes to cause bendf ing of the pipes ortubesr withthe aid of a removable pipe supporting cradle which Ais adapted to bebraced or clamped'against rremoval due tothe pressure of the pipes, or

' tubes being exerted! against the cradleduring a bending operation ofthe machine.: Itis afurther object of Athis invention to havingajmultiple type ed tobe clamped in .position by the actiony of fthepipes or tubes being bent. y o It is `furthermore an object'of 4thisinven- *o tiontoprovide an limproved typeo pipe bendingappa'ratusvadaptedjto be convenientf ly mounted in position on astationary supy port andy having 'a` multiple type ysheave m adaptedY tobe operatedvwith respect to a stay f tionary'multiple type:

pipe support yby means ratchet n opere atedfmultiple type. pivotedbending block@ provide an `,improved and `simplified type or vj v pipeor tube lbending machineincluding a multiplejktype'rotatable blockorsheave adapted to bef moved lrelativefto a stationary'mul-f qtiple'type oipipe or tube support,`saidsheave Y of: pipe supportingcradle removably engaged rthereon and adapt-` taken on line V-VofLFigure3,'with parts of a lever operated mechanism provided with a quickreleasedevice* l y Another object' of the invention is to prof vide animprovedand vsimplified type of pipe bendingfmachine wherein a multiple type-ofbending block` or f sheave isQa'dapted `to be movedk with respect to astationary pipe supportby means of a lever actuated pawl and'ratchetmechanisni or directly by means of a yleverwhen `the pawlmechanism released. 60.'-

It is an Virriport'a'iit object of this invention to provideraisimplifi'ed form of pipe or tube bending apparatus of the portabletype which is so constructed ythat the same may be readilyj clamped' orsecured inpositon 'uponA a 65 stationary supportto permit a multipletype pivoted sheave iblock. carrying a removable pipe supportingcradleftobeoperated v respect to multilule'type of stationary' pipedii'erentsizes tobe readily bent. y e, Other and further importantobjects `of this invention will bel apparent from the disclo-l suresinthe specification andthe accompanying drawings. i j i l The invention(ina preferred form) is illustrated in the-drawings and hereinafter morefully described', 1

On the drawings:

Figure l is a side elevation of an improved 8* pipe-bending apparatusembodying the principlesI fof this invention,` illustrated as mountedonastationarysupportand showing the 1 operation of the pipe bending sheavein dotted $5 lines-j' i .L -Figure 2i`sia-top planyv'iew ofthepipe.bendingapparatus;y Y, i 'i f g y i Figure 3 is an enlargedusectionalview of thepipe 'bendingy apparatus taken*y on Vline e riir-iiiofFigurer i L l 90 Figure 4 isan enlarged end elevation of the pipebending apparatus takenfon line of Figure 1.

'Figure A5AY brokenaway.A f 1 l Figur'ei is avertical sectionalviewtaken Y online VI-Vlot Figurei." 1 j' Figure 7 yis an enlargedverticaldetailedV section "of the pipebendingfapparatus taken" or tubeVsupp'ortjto'perinit .pipes or tubes of "7'05 'sila sectionalelevationalv view ,-95

on line VII- VII of Figure 1, with parts shown in elevation.

As shown on the drawings:

The improved bending apparatus or machine of this invention is of aportable type in that it is constructed to permit the same to be readilymoved to allow the same to be removably but rigidly secured tostationary supports. The improved bending apparatus when secured on astationary support is adapted to be conveniently operated by'means of alever arrangement whereby hollow or passaged articles such as ing, orsolid articles such as rods, bars and the like, of different sizes ordiameters may be conveniently and readily bent.

In the present showing of the device, the reference numeral 1 indicatesa Hoor or platform having rigidly secured thereon a supv porting framecomprising supporting legs 2 and 3 to which the'improved bendingapparatus is adapted to be removably secured byf any suitable means.

The pipe or tube bending apparatus or machine comprises a body ormounting plate 4 provided with apertures to permit the same to berigidly secured to the upper ends ofthe frame legs 2 and 3'by means ofrivets 5, bolts o r other suitable means. Integrally formed on one ofthe lower corner sections ,of the V mounting plate 4 is a stationarybracket or arm 6' Vwhich projects outwardly and upwardly and is providedwith a plurality of pipe or tube receiving` sockets, seats or pock- Aets 7, 8, and 9 of diiferent diameters arranged in graduated relationwith the largest pocket or seat lowermost ,and nearest Vthe mountingplate 4 and with the smallestpocket or seat 9 positioned farthest fromthe mounting plate 407-4 and at a higher level, as

inFigure 3.

Integrally formed on one sideof the mounting plate 4 is a bearing collaror boss 10 in which a stud shaft or bolt 1I is mounted with 4.5v` saidbolt -projecting through the mounting platel 4 as clearly illustrated inFigure V7. Pivotally mounted on the` stud shaft or bolt 11 is a pipe ortube bending block orsheave 12 having an arc-shaped or curved pocket 13provided in the side thereof adjacentv themounting plate 4. The outercurved edge or margin of the recess or pocket13 'is' shapedor cut toprovide anarcuate' or curved ratchet 14 asl clearly illustrated inFigure 6. Coact ing'with the teeth of the ratchet 14 is a pawl' 15. Thepawl member 15 has connected thereto one end of a control or release rod17 the outer end of which is shaped to form a Ahandle 18. Thecontrol rod17 projects upwardlythrough anopening ina bracket 16 secured to themounting plate 4. llVhen it is desired to release the pawl 15 the samemay be pulled upwardly out of o o-acting engagement with-the ratchetteeth 14, `by means of 05 the releaserod 17. The pawl 15 is pivotally`lever Varm 21 is metal pipes or tubclearly illustrated supported upon aradial projection or arm 20 which is integrally formed on the pivotedend of a lever base or arm 21 having a` socket 22 formed on the outerend thereof in which the inner end of an actuating lever or handle rod23 is removably engaged. The lever rod 23 is provided for use inconnection with the lever arm 21 to increase the leverage to causeoperation of the pawl 15 to rotate the bending block or sheave 12. Theinner end ofthe pivotally mounted on a stud or bolt 24 which issupported on the mounting plate 4. Integrally formed on one of the edgesof the bending block or sheave 12 is an auxiliary socket or pocket 25for the removable reception of the lever rod 23 when it is desired torotate the block orsheave 12 direct without employing the pawl andratchet mechanism when the pawl 15 is released by means of the controlrod or handle 17.

The bending block or sheave 12 is provided with a plurality of adjacentpositioned pulley segments or bending shoes 26, 27 and 28, the groovesof which are of different `diameters and correspond respectively withthe diameters of the stationary pipe or tube supporting sockets lorseats 7, 8 and 9 respectively.

For the purpose of supporting and holding pipes or tubes or othermembers to be bent in supported position-associated with the bendingblock or sheave 12, said block or sheave is provided with a removabletube or pipe supporting cradle or retaining bracketf29 provided withhook-shaped arms 30 and 31. Connected to the supporting bracket orcradle 29 is one end of a guard chain 19 the other end of which issecured to the bracket 16. The cradle or supporting Vbracket 29 isprovided with a plurality of pipe or tube receiving pockets or seats 32,ent ydiameters corresponding respectively to the v diameters of theblock or sheave pipe receivingV grooves 26, 27 and 28 respectively. Thehook members 30 and 31 of the pipe supporting cradle 29 are adapted tobe removably engaged in suitable grooves provided in the block or sheave12 as clearly illustrated in Figure 7 for holding the cradle inVposition for retaining pipes, tube, or articles to be bent in properposition to acted upon when theben'ding block or sheave is operated bymeans of the lever 23. The improved hanger bracket or cradle 29isprovided with the hook supporting arms to provide an arrangement wherebythe pipes or articles to be bent may be; readily engaged between thebending block or sheave and the cradle 29. After a bending operation ofthe pipes or tubes, the cradle 29 may be readily removed from the blockor sheave tovpermit the bent pipes or tubes .to beremoved from themachine.

The improved bending apparatus or machine is constructed to permitpipes, tubes, rods or bars of 'different diameters or sizes to beconveniently bent in the machine. The

stationary bracket` 6 forming apart of the mounting plate of the machineis provided` Witha plurality of sockets or seats of differentdiameters'or sizes tocorrespoiid with the l different sockets or seatsprovided in the rotat-l able bending block or sheave. pipe or tube to bebent is first placed inthe desired pocket n or seat afforded inthestationary pipe or tube y bracket f6 after which the cradle vsupporting '10 29 is engaged beneath :the pipe or tube and the hookmembers y and 31 of the cradle are thenslidably engaged inthe groovesot. the bending block or sheave 12 tohhold the pipe or tube ina selectedopening of the bending 1.5 block or sheave.4 With a pipe or the sameupwardly a byy permitting the spring controlled" pawl 2Q- 15 jto{slidably tracky over,therteethqoic the ratchet14 until thelpavvlreaches a selected tooth. The lever 23 is then foi-ced downward-f'mechanism causes the bending block or shea-ve .352 to be gradually movedfrom the full line posi? tion of Figure l into the dotted line positionthereby causing the pipe ortube to be gradually and smoothly bent.VAfter a bending operation, as described, thekcradlef29 is slidably 14;removed from the bending block or sheave 12 thereby permitting the benttube or pipe to be conveniently and readily removed from thebendingapparatus or machine. Incase the pipe or tube to be bent is of lightWeight andis adapted to be easilybent, the'lever 23 is removedrom-thesocket22 and is engaged in the socket 25. Thepavvl 15 is nowreleased.'

from engagement with the ratchet 14 by pulling upwardly on the controlrod or yhandle 52117-18. With the paWl 15 released, the bendf ing blockor slieave 12 is adapted to be opf erated bythe lever23 novv seated inthe socket 25 to cause the bending block or slieave 12 to be rotatedabout its pivotal support there-V` d 5 5f by causing the tube or pipeengaged in the machine to be readily bent an amount depending upon therotation of the block or sheavek with respect to the stationary pipe ortube supporting bracket 6.

Attention is called to the fact that the improved bending apparatus orinachinebeing vprovided Withdiiferent sized pipe receiving openings inthe bending block or sheave and with dierent sized pipe receivingsockets or 65,; seats in the stationarysupporting bracket 6 tube mount-A Aed in position in the bending apparatus or machine the lever 23v isoperated by swinging selected distance there`l press or `force thecradle-29 out-` ,fpermits pipes, .tubes,'bars or rods yotfdilereiitsizes or diameters to be conveniently. bent in'` the machine. It willalso be understood that,

iff desired, aV plurality oty pipes of dilerent sizes may belsimultaneously bent in themachine by engaging the pipes or tubes in therespective receiving openings and sockets pro:

vided. l

It will, of course,be understood that various details of construction'may be varied through a Wide range Without departing from theprinciples of this invention, and it: is,

therefore, not the purpose to limit the'patent granted hereoii otherwisethan is necessitated bythe scope of the appended claims.v

I claim as my invention :r

1. vAn article bending machine comprising amounting plate, a pipesupporting arm sccured thereon and having a plurality of pipe ireceiving sockets ofjdiierent sizes formed therein,` ha; slieavel bloekv rotatably supported on said mounting plate and havinga plurality ofpipeV receiving grooves ot different sizes ormedtherein, apipesupporting cradle removably, engaged on said'sheave block and having apluralityot pipe receiving socketsL of diiierent-sizes therein, andmeansfor rotating said sheave block to bend an article engaged in themachine.

2. A'pipe bending machine comprising ax support, amounting plate securedtheret`o,a pipe supportingbracket on said mounting plate, a ,sheaveblockrotatably supported on said mounting plate, a pipe-'supporting memberremovablyy engaged on said sheave block for holding a pipe associatedwithsaid sheave block, a ratchet mechanism formed in said sheave block,a lever device, and a .pavvl car:- ried/ bysaid lever `device andcoacting with said ratchetmechanism for causing rotation of the sheaveblock. f f

3. A pipe bending machine comprising a. support, a mounting platesecured thereto, a

pipe supporting bracket formed on said mounting plate pipe receivingsockets of dierent sizes :formed therein` a cradle member removably andhaving a Iplurality vof.

formed therein, asheave block rotatably sup-y i ported Von said mountingplate and `having a.V

plurality of pipe grooves of differenty sizes V115 engaged on said'slieave block and having a plurality of pipe receiving lsockets ofdifferent sizes formed therein opposite the correspondf inglysizedgrooves formed in the block, a

ratchet formed inv the sheave block, a -pawl ycoacting with saidratchet,and a lever meclianism tor'operating said paxvlto cause rotationy l ofthe sheave block with respect to the pipe' supporting bracket to causebending of a pipe e engaged in the machine.

LA pipe bending machine comprisinga niounting'plate,a pipe supportingbiacketsecured thereon and having 'a plurality ofpipe receiving, socketsof dilferent fr sizes Aformed therein, a sheave block rotatablysupported on said mounting plate and'having a plurality of adjacentlypositioned pipe receiving grooves of different sizes formed therein, apipe receiving. cradle member removably engaged on said sheave block andhaving a plurality of pipe support-ing sockets formed therein of dierentsizes, Va ratchet formed in said sheave block, an operating leverpivotally supported on said mounting plate, a paWl pivotally supportedon said operating lever in coacting relation With said ratchet, and arelease mechanism connected With said paWl for moving the same out ofengagement with said ratchet. i

5. A pipe bending machine comprising a mounting plate, a pipe supportingbracket thereon, asheave block pivotally supported on said mountingplate and having a plurality of adjacently positioned pipe receivinggrooves formed therein, a pipe supporting cradle having a plurality ofpipe supportingV recesses formed thereimgmembers formed on said cradlefor Vremovably engaging the sheave block for holding the pipe supportingcradle in position, and a levermechanism for rotating the sheave 4blocktogether with the cradle member with respect to the pipe supportingstationary bracket to bend the-pipe engaged in the sheave groove.

6. A pipe bending machine. comprising a stationary pipe support, asheave block pivotally mounted on said support and formed with aplurality of pipe bending sheave segments for receiving and bendingpipes of different sizes, a pipe retaining cradle member removably'engaged on the sheave block, an internal ratchet segment formed in saidsheave block, a lever pivotally supported on said support, a pawlpivotally supported on the inner end of said lever in coactingengagement with said internal ratchet and segment, a lever receivingsocket formed on said sheave block, a release means connected with saidpawl for moving the same out of engagement With the internal `ratchetsegment to permit the sheave block to be rotated to produce a, bendingoperation, and a lever member removably engaged in the socket for ofcoacting engagement with the ratchet segment. f

` 8. Apipe bending machine comprising a pipe supporting stationarymember, a pipe bending member movably mounted thereon, and comprising agrooved sheave block having a plurality of sheave segments of differentsizes integrally formed thereon, a cradle member having a plurality ofpipe receiving sockets of different sizes formed therein, supportingmembers integrally formed on said cradle and slidably engaged in thegrooves of said sheave block, and means for moving the sheave block withrespect to the stationary support to bend pipes around the sheavesegments. l 9. A pipe bending machine comprising a stationary support, asheave block rotatably mounted thereon, removably engaged on said sheaveblock, said sheave block having a recess formed therein, ratchet teethformed in said recess, an arm pivotally mounted on said' stationarysupport, a lever removably engaged in said arm, and a pavvl pivotallymounted on said arm in coacting engagement with said ratchet teeth.

In testimony whereof I have hereunto subscribed my name at Chicago, CookCounty,

Illinois.

GUsTAvE LIDSEEN.

a pipe retaining member actuating the sheave block when the paWl isreleased.

7.A pipe bending machineV comprising a pipev supporting bracket, asheave block pivotally mounted thereon and having a plural- Vity ofgrooved sheave segments of different sizes integrally formed thereonadjacent one another,

removably engaged on said sheave-block, a ratchet segment formed in saidsheave block,- an arm pivotally supported on said supporting bracket, alever removably engaged in said arm, a projection on the pivoted end ofsaid arm, a paWl piv'otally mounted on said projection in coactingengagement With the ratchet segment, anda release mechanism` forreleasing the paWl and moving the same out a pipe supporting cradlemember

